Hello William, I know it's confusing when your sign-in changes. Windows 11 uses passkeys for password-free sign-in, often with your Microsoft account. If you set up Windows Hello or added a passkey, it might affect your phone if it shares the same account.
To fix it, check your Microsoft account security settings online for Passkeys or Windows Hello and remove any listed. On your PC, go to Settings > Accounts > Sign-in options and turn off Windows Hello or any passkey option. Restart your devices afterward.
Are you using a Microsoft account on your phone, or does it ask for the passkey when unlocking?
Best
rez